Ring boost propulsor

ABSTRACT

The Propulsor includes a tubular oval ring and a duct assembly with their pumps, a nozzle ejector with a thrust impeller, a hydraulic pipe-connector with its valve-adjuster, a spring piston valve unit, and devices of motor vessels&#39; hydraulic infrastructure. 
     The ring&#39;s pumps act in self-series, thus rising the water pressure inside the ring up to adjusted level. The static portion of the risen pressure is hydraulically transmitted to the thrust flow in the duct, thus providing a massive boost to the common thrust developed by the pumps of the duct assembly. The motor vessel gets boosted propulsion with larger thrust and correspondingly higher speed.

RELATED APPLICATION

Pub. No 2008/0141652A1, Pub. Date: Jun. 19, 2008, and then titled RING JET PROPULSOR by the same author.

Said application is considered as abandoned now.

FEDERALLY SPONSORED RESEARCH

Not applicable.

SEQUENCE LISTING OR PROGRAM

Not applicable.

BACKGROUND OF THE INVENTION

This proposal relates to the hydrodynamic jet boost propulsion structures for marine motor vessels and deals with:

-   -   closed loop tubular hydrodynamic tunnels,     -   sealing gate-pumps, axial-flow pumps, water eject impellers,     -   series work of hydraulic pumps; reaction propulsion,     -   hydraulic valves, meters, general infrastructures ; thrust         output.

The thrust and speed levels of the conventional motor vessels are evidently not high enough. The ships move slowly. Many kinds of maritime thrust propellers, water-jets, other regular devices look outdated, and have to be improved with substantial growth of thrust.

This proposal, as an improved redeveloped simplified version of said above abandoned one, suggests a method and its corresponding means for high thrust levels obtaining with usage of closed ring tunnel.

Any prior arts where a closed loop tubular ring tunnel were used in for a hydrodynamic boost thrust obtaining, were not found.

BRIEF SUMMARY OF THE INVENTION

The substance and key objects include usage of:

-   1. A closed oval tubular ring tunnel with axial-flow pumps which     work in series thus developing water pressure rise inside the     tunnel; -   2. A jet-duct assembly with two sealing gate-pumps, a duct-adaptor,     a nozzle-ejector with its thrust-impeller, a filter-intake; -   3. A pipe-connector with a valve-adjuster for proper hydraulic     interactions between said jet-duct assembly and ring tunnel; -   4. A spring-piston valve for the hydraulically united structure in     order to prevent possible cavitation, regular drive-adjusters,     infrastructure.

Said above means provide usage of their corresponding, natural, and interdependent method where in:

-   a) the risen water pressure inside the ring tunnel is hydraulically     and properly transmitted to the jet-duct assembly, which is     protected by sealing gate-pumps, and farther to the thrust-impeller; -   b) capacities and the heads of all the pumps and impellers in the     jet-duct assembly are balanced and properly adjusted, the risen     water pressure substantially contributes to the momentum part of the     thrust and multiplies pressure part of the boosted in times thrust.

DRAWING FIGURES

The drawings are schematic for better clarity. The regular, conventional, and obviously auxiliary elements are not shown.

FIG. 1 illustrates a vertical section with a partial side view of a typical Ring Boost Propulsor Set.

FIG. 2 is a plan view-partial cross-section taken in FIG. 1.

FIG. 3 shows a plan view of an exemplary vessel with two typical Ring Boost Propulsor Sets.

FIG. 4 is a cross-section taken in FIG. 3, and turned vertically.

FIG. 5 demonstrates a technological scheme of water pressure and water flows patterns' development in operation.

FIG. 5A—a data table of pressure and thrust patterns and terms.

REFERENCE NUMERALS, SYMBOLS, CHARACTERS

In the drawings, closely related units, parts, and elements have the same numbers but different alphabetic suffixes.

20A, 20B—ring boost propulsor sets 21—closed oval tunnel 22A, 22B—axial-flow pumps 23—electric motor 24—spring-piston valve 25—meters 26—pipe-connector 27—valve-adjuster 30—jet-duct assembly 30A—fairing cover unit 31—intake gate-pump 32—gap gate—pump 33—duct 33A—duct-adapter 33B—duct meters 34—electric motor 35—drive-adjuster 36—intake filter 37—nozzle-ejector 37A—thrust impeller 37B—electric motor 37C—reversing bucket 37D—servo 40—vessel 41—power unit.

Water flows and marks: Iw—water intake Jd—duct jet Ni—nozzle intake Ne—nozzle exhaust Rf—ring circular flow IL—intake level WS—water surface level

Water pressure data indicators: Paw, Prd, Pni, Pne—are ambient water, ring-duct, nozzle intake, and nozzle exhaust pressures, respectively;

-   -   Pi, Pa, Pg, Pti—are pressure heads of intake, axial-flow, and         gap Pumps, and thrust impeller, respectively;         Ci, Ca, Crt, Cg, Cti—are coefficients of efficiency/performance         of the Intake, axial-flow, ring-tunnel, gap, thrust impellers,         respectively.

Thrust terms and definitions: Tbt—total boost thrust Tm, Tp—momentum and pressure portions of Tbt, respectively dMe/dt—mass flow through the nozzle-ejector VM—vessel move

Vea—average nozzle—ejector exit velocity through the area An, Tcm—average thrust of the similar regular means TR—thrust ratio.

The reference numerals 23, 24, 25, 26, 27, 33A, 34, 36, 37B, 37C, 37D, 41 are conventional adapted units used in present new proposal.

DETAILED DESCRIPTION OF THE INVENTION

The Ring Boost Propulsor (RBP) represents a technological method which is closely interdependent with its means all together developed for better thrust obtaining in energy saving manner.

Substantially higher levels of the thrust can provide new levels of speeds and other advantages for any kind of motor vessels.

The RBP includes hydraulically interconnected devices which rise the pressure of water flows and protect said risen pressure at all the steps thus rising in times the total boost thrust Tbt.

FIGS. 1, 2 demonstrate the BRP—set 20A which includes:

-   1. A closed oval ring tunnel 21 with two axial-flow pumps 22A, B     installed in series, a piston valve 24, a pipe-connector 26 with its     valve-adjuster 27, meters 25; -   2. A jet-duct assembly 30 with two sealing gate-pumps 31 and 32, A     nozzle-ejector 37 with its thrust-impeller 37A, a fairing cover 30A,     an intake filter 36, a duct-adapter 33A, infrastructure.     All the basic indicated water flows are shown in their developments.

FIGS. 3, 4 illustrate an arrangement of two RBPs 20A and 20B with an exemplary motor vessel 40. The closed tunnel 21, jet-duct assembly 30, pipe-connector 26 with its valve-adjuster 27, two water intakes Iw and two nozzle exhausts Ne, and other related and indicated elements are shown on this exemplary design.

FIGS. 5, 5A, being a scheme and its table, show and explain the flows' water pressure growth pattern with thrust forming and its step-by-step developing. All the water flows with their pressures are shown in corresponding hydraulic interactions.

Operation

The gate-pumps 31 and 32 fulfill the inner space of the jet-duct assembly 30 and oval tunnel 21 with ambient water; the pipe-connector 26 and then opened valve-adjuster 27 are used.

The axial-flow pumps 22A and 22B, working in series, rise the pressure of the flow Rf up to the definite level. This risen pressure is provided to the duct 33 due to the pipe-connector 26 and valve-adjuster 27; the common risen pressure Prd is protected by both sealing gate-pumps 31 and 32; the spring-piston valve 24 prevents cavitation.

When the meters 25 and 33B show a balanced pressure, the thrust impeller 37A starts and develops total thrust T′bt as a sum of momentum and pressure parts. The operation of elements 34, 35, 30A, 36, 37C, 37D and other—all indicated—is clear in drawing figures from 1 to 5A. 

1. A Ring Boost Propulsor for motor vessels, comprising: a) a tubular oval ring-tunnel with at least one axial-flow pump placed inside said ring-tunnel, and b) a jet-duct assembly with two sealing gate-pumps and a nozzle-ejector with a thrust impeller.
 2. The Ring Boost Propulsor of claim 1 wherein said ring-tunnel and said jet-duct assembly are hydraulically linked up by at least one pipe-connector wherein each includes a valve-adjuster.
 3. The Ring Boost Propulsor of claim 1 comprises its interdependent Method which includes: a) self-series work of the pumps inside oval ring tunnel for cyclical rising the pressure of the ring's water flow, and b) hydraulic transmission of said risen pressure from the ring tunnel flow to the jet-duct thrust water flow, and c) usage of said risen pressure for boosted total thrust obtaining and possible cavitation preventing. 